<!--The content below is only a placeholder and can be replaced.-->
<!-- <nz-layout>
  <nz-header>
    头部module
      <app-header></app-header>
  </nz-header>
  <nz-layout>
    <nz-sider>
      <app-sider></app-sider>
    </nz-sider>
    <nz-content>
      
    </nz-content>
  </nz-layout>
  <nz-footer>Footer</nz-footer>
</nz-layout> -->
<router-outlet></router-outlet>
